Adding-machine.



-Paueilted June 8, 1909.

' a SHEETS-SHEET 1.

0.31, MGFARLAND,

ADDING MACHINE. y APPLIGATION FILED JUlia, 1907.

Patented June 8, 1909;

3 SHEETS-SHEET 3.

UNITED sTATns PATENT cerros;

('IIARLES N. MCFARLAND, OF DORRANCETON, PENNSYLVANIA, ASSIGNOR TO THE AIJDER Y MACHINE COMPANY,.0F KINGSTON, PENNSYLVANIA; A CORPORATION OF PENNSYL- VAN IA.

Alanine-MACHINE.

Speccation of -Letters Patent.

patented June e, 190e'.

Application ined July e, 1907. sei-iai No. 332,009.

To au naam it may concern:

Beit known that I, CHARLES' i LAND, a citizen of the United States, and a resident of Dorranceton, in the. county of Luzerne and Sta-te of Pennsylvania, have invented certain new and useful Improvements in Adding-Machines, of which the following is a specification.

My invention relates to adding machines and more particularly to the rwell lgnown Tales adding machine. This machine is commonly provided with a printing mechvanism mounted at that end of the device farthest from the operator.4 It also comprises means for registering the items to be lenumerated and added upon' numeral wheels,

an actuating handle and connections between the handle, the numeral wheels and the printing mechanism whereby, vwhen the machine is normally operated, the items set up lupon the numeral wheels are recorded by means of the printing mechanism. .One style oi' -the machine is provided with means whereby the function of the printingmechanism is temporarily interrupted without at the same time ati'ecting t-he functions of the other mechanisms, such means. terminating at the top of the machine in the hey called the printing eliminating or non-printing hey, all as described and illustrated in a co-pending application for United -States Patent, filed Oct. 23, 1906, by Charles IYales, and numbered 340,135. It has been found by experience that in the operation ot' this machine it sometimes happens that after the oierator has started to print an item, he changes his mind and aetuates the nonprinting button. This does not interfere with the enumeration oi an item by the operator or the actuation ot the main handle of the machine, but when the parts are sought to be restored to their original positions, the actuation of the non-printing button has placed them in such relation-s to each other that they are apt to become brel-zen.

'I he `purpose of the subject matter-ot' this application is to provide means whereby the disaster above mentioned is prevented.

In the drawings, a machine embodying my invention is shown in three views in si'defielel vation and partial vertical section.

T. MCFAR- in denominational series, each hey provided with a stem by the de )ression of which a stop corresponding to t ie numeral value of the key depressed is interposed in the'paths of rack bars 20, one for each numeral wheel 3l. These rack bars are each provided with toothed racks 21on their upper. edges and are supported on their front ends upon links 22 suitably pivoted and at their rear ends upon the'extremities of bell crank levers 23 mounted to oscillate upon the shalt 24. The other ends ot' the bell cranhs-are pivotally connected to the printing mechanism hereinafter described.' The numeral wheels are provided with pinions 30 and are all mounted upon the common shalt 'lhe numeral In the drawings7 l is the frame of the mawheels display the digits in proper order on t A mam han 4o is adapt-ea i@ vibrate.

either by a handle'manuallyl operated or by any other suitable source of suitable power. This in turn oscillates a section 41 provided with a leg 42 which inturn, through thc pin 48, moves a train of mechanism, the construction of which is immaterial to our present pu rpose, whereby the racks 2() are moved and through Vthem movement is communicated tothe printing mechanism.

loo x The printing mechanism comprises a 'se-y ries of type bars 50 arranged in vertical series on a carrier 51 so thatI when any one of the racks is moved the corresponding type bar is raised until that type displaying the number corresponding to the extent of the moveshaft being in turn mounted upon a carriage l adapted to move laterally in the machine.'

he'devi'celi-s also 4provided with suitable means for inlring the typeand propelling' forward the paper intermittently 'and for inorvthe other parts in harmony to perform their se arate functions, but asthese particu'- lar mechanisms 'form no part of this present invention, a detailed description ot them is omitted".

The printing mechanism comprises a series ot pivoted hammers-90,one for 'each denominational series, and all adapted to oscillate on a common bai' 91. They are actin ated by individual springs 92 secured at their opposite ends to a common rocking' bar 93 which is actuated by mechanism not refrant to the present invention 'and the function otwhicli is to energize the springs 92. Appropriate mechanism' is also providedI normally to lock the .hammers against ni vement until the timecomes for their. desired i actuation.

A series of intermediate plungers Q4 are arranged opposite the point ot'piint, one tor cach denominationalseries of keys and vnumeral wheels in the machine. The function of' the' hammers 90 when'they are released and are vpropelled by their springs 92 is to strike these plungers 94 and to drive them sharply'against the particular type bar posi liey stein is provided with a slot 12 and thereby adapted to engage with a button 13 tioneld to receive the bloujvso as to propel' vsuch' type bar lagainst the paper on the platen, and .thus print the item to be i'ecoi'ded on such paper'.

Each hammer 90 is provided with la dctcnt 9.5 adapted to engage with one of a 'series of hammer hooks l96 pivoted upon a bar 97 suitably located and common tov all of the hoolfs. These hooks areope'rated and caused to swing upon the bar Q'by means of a vertically movable release bar QS'whic-h is adapted toslide in suitable bearings. It is providedrwith a tension spring 99 which in turn is secured at its opposite end td a iixe'd point in-tlie machine. lIt is also provided with a stop lug 100 which in normal position is located immediately undeithe extremity of the bell cranlrf lever 23 and it is also provided with' a laterally extending. footlOl.

lvhen the bell cranklever 23 is osciliat'cd upward and is t ierefore no longer in Contact" with the stop and lug' 100, the release bai' under the tension oi" the spring 99 will move iipvif'ard. As it does so, Aits piper end will trip the hammer hook 96 enddisengage it from the detent Qland; this will causeth hammer 90, energized byrth stretching-of the springt 92, to be swung forward to deliver its appropriate blow to that one 4ott-he pluri, gers 91 in position to receive it.

lt can readily be understood that il' the release bai' 98 is prevented lroin'inov'ing to' 'Y 'strike the hammer hook 96 when the lever 23 1S vibrated,'tlien the hammer 9() will not be actuated and even ii the appropriate type to record the number set upon the numeral Wheel is raised to its position 'opposite the point of print; its' coi'res'pondi'rigplunger'94 will not be moved 'forward to propel tlietype e against' the 1paper .and the item' will not recorded.4 n other words,if the release lbar is prevented from rising under tension ot the spring 99 when the bell crank lever 23'is moved, the functionl of the printing. mechaiiisin will be temporarily interrupted. Thel interruption loi" this function yis brought about'by means oi a key 10 comprising' an appropriate finger tip and a stein 11. The

suitably' located in the 'l'raine of the machine. Aspring 11 is secured to the key stem 11 and to some other fixed convenient place. .it

its lower extremity 'rtlie stem 11 is pivotcdis depressed it will oscilla-te t'lie'l'evei' 1.3.,an'd

move t-he iiiteifl'crence bai' 17 towardvitlie Y right,- as shown in Fig. 3, so that wheirtlicgy release barQS starts lto'inove upward wlienyx the bell. crank lever. 23 is swungy on'its pivot, the toot y101 will be brought into Contact with the interference bar 1T' and the release `bar 9S will be prevented 'from moving' npward, and therefore, -althoughthe movement oll the rack bar 20,`will"liave rotated the wheel 31 through its appropriate pinion 30 to enumeratethe item set up on ythe' keys, on the numeral wheels7 such item will not be recordedfbecazse the hammer hook 9G will not be released and the" hammer will not' be actu-ated. The button' 1 3 serves to hold the key 10 down wheni has been depressed,

it beingf'held normally undepressed under tension oll tliecoiled'spring 1&1.` Wlien, alici' depression, it is desired to l,fte/store it. to its.'

loriginalposition,.it is niovedfslightly i'oi'wardIl and away moves upward .A

'there area series oi' release bars arranged from the buttoii/ll'when it ,atonce l l'oot 101. The interference bar 1T is made .of such width `that it will pass across l he ma- Icranks 23 and permitted the release bar. 9S to rise slight 4ly so that the foot 101 i; above' the level of the interference bar 17. When the'parts are in this'position and the nonprinting key is depressed, the interlerence b bar 17 is moved under the foot 10]. lfVhen .it is sought :o restore .the parts to their normal positiorl vas the actuation oi" the handle is completecfthe l'oot 101. of the release bar 98 mits downward movement strikes against the interference bar 17 v and the release ba.' or

beforehe pulled the main handle.

its connected parts are broken or buckled as shown in Fig. 4. In order to avoid sueltan accident I provide the release bar 98 with a downwardly projecting lateral guard 102. Ii, when the guard is provided, the nonprinting key 10 is depressed after the Inovement of the actuating handle is commenced, as shown in Fig. 2, the interference bar 17 will strike against the graardlOZ and the motion of the key 1Q downward will be arrested and the operator will thus 1oe informe/l that he should havev depressed the key 7.0

does not notice that he has notentirely depressed the hey, when'the parts are restcred to their normal position and the release bar 98 is moved downwardly, no harm is done because its guard 102 is engaged by the edge of the interference bar 17.

What I claim as new is 1. In a machine of the class described, comprising a 4printing mechanism, an adding mechanism and a non-printing key provided with a stem by the actuation of which printing may be'prevented, amember moved by the stem, and a stop therefor, for automatically preventing the actuation of the preventing means when the printing mechanism has been partly operated.

2. In a machine oi" the class described, comprising a printing me chanism, an adding mechanism and a non-printi ng hey provided with a stem by the actuation of which printing' may be prevented, a member moved the stem, and a stop therefor', for automatically preventing the actuation of the non- )rinting key 'utter the adding mechanism has been partly operated.

il. In .-i machine olE the class described, inprisi1\.g n' printing' mechanism, nn adding mechanism and n non-printing Le" provided with a stein by the actuation oi' which printme' muv be prevented, n member moved by Or if heV ally preventing the' actuation ol' -the nonprintmg hey after the printing operation has eenV commenced.

4. In a machine of the class described, comprising a printing mechanism'including type.v moving mechanism and a member adapted when moved. to set in operation the type moving mechanism, anda non-printing key provided with an interference member whereby the said moving member is held against movement,-means for' preventing the engagement of the interference member and the iziovin'g member after the latter has i moved past a predetermined point. y

. 5. In a machine of the class described, E comprising a printing mechanism including type moving mechanism and a member adapted when moved to set in operation-the type,v moving mechanism, and a non-printing against movement, means for preventing the engagemintpf the interference member and moved past a predetermined point consisting member impinges. A

6. In a machine ofthe class described, provided with a printing mechanism com risin type hammers, detents normally holding the same out of action, a release bar adapted when moved to' actuate the ldetents and a non printing key adapted to prevent the Inovement of the release bar, means adapted to'lnck the nonrinting key against move-` ment after the re ease bar has commenced to move.

7. .Vn a machine ofthe class described, provided with a'printing mechanism 'com rising type hammers, detents normally holdmgthe same out of action, Va release bar adapted when moved to actuate the detente, a nonprintingkey adapted to prevent the movement of the release bar, and means adapted to lock the -nonrinting key against movement after the re ease bar has commenced to move, comprising a guard on the release bar. 8; In a machine of the class described, provided with a printing mechanism vcomprising type hammers, detents normallyl holding the same out of action, a release bar adapt-ed when moved to actuate the detents, a non-printing key adapted to prevent the movement of the releasebar, means adapted to lock thenon-printing key against movement after the release bar has commenced to move, comprising n guard on the release bar, and an interference bar adapted to be moved by the non-printing key to contact therethe stem, and a stop therefor, for automat it the moving member`after the latter has key provided With an interference member j., whereby 'the said moving member is held of' a guard against which .the interference i ioo when movedto actuate the detents, a non- Wit'nes's mylmnd his 24th day of June| printing key adapted teprexfent the 1110ve 1907, at Jthe brough of Dorranceton, in the 10 ment pf `the. release bar, gue-Ls 'adapted to countyo' Luzerne andStateof Pennsylvanie.

'10e-k the v1'1'o lvl-pl-intin'g key aains't nove- 'T Y .mentaftel,theureleasear has cymme'need to *CHARLES N'EIGFARLAL'D' move, eomprsng'a guard lon the release bar, me/:ases:

and a. member moved bythe nan-printing' A.L.W1LL-Lm1s.

lkey to Contact therewith.. P. DRUM. 

